Overview

overview

10

Static

static

3

tmp7f238q66.exe

windows10-ltsc_2021-x64

10

tmp7f238q66.exe

windows10-2004-x64

10

tmp7f238q66.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    02/06/2026, 02:48

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General

  • Target
    tmp7f238q66.exe
  • Size 524KB
  • Sample260602-dahs7sdv9m
  • SHA256 c4c741a11beb96f4c28deda40b4b246a350a83e0bd91ab6e09e5b59fcba51a39
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoverypykspapersistenceprivilege_escalationtrojanworm

Malware Config

Signatures

  • Family: Pykspa

    Pykspa is a worm spreads via Skype uses DGA and it's written in C++.

    wormpykspa
  • Detect Pykspa worm 2 IoCs
    worm
  • Modifies WinLogon for persistence 2 TTPs 6 IoCs
    persistence
  • UAC bypass 3 TTPs 15 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 34 IoCs
    persistence
  • Disables RegEdit via registry modification 6 IoCs
    defense_evasion
  • Executes dropped EXE 28 IoCs
  • Impair Defenses: Safe Mode Boot 1 TTPs 6 IoCs
    defense_evasion
  • Adds Run key to start application 2 TTPs 64 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 12 IoCs
    defense_evasiontrojan
  • Hijack Execution Flow: Executable Installer File Permissions Weakness 1 TTPs 3 IoCs

    Possible Turn off User Account Control's privilege elevation for standard users.

    defense_evasionpersistenceprivilege_escalation
  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 46 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 46 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 18 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • System policy modification 1 TTPs 42 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp7f238q66.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp7f238q66.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4924
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\users\admin\appdata\local\temp\tmp7f238q66.exe*"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Hijack Execution Flow: Executable Installer File Permissions Weakness
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:3496
      • C:\Users\Admin\AppData\Local\Temp\veovvln.exe
        "C:\Users\Admin\AppData\Local\Temp\veovvln.exe" "-C:\Users\Admin\AppData\Local\Temp\umfvedohswfadhmy.exe"
        3⤵
        • Modifies WinLogon for persistence
        • UAC bypass
        • Adds policy Run key to start application
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Impair Defenses: Safe Mode Boot
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Hijack Execution Flow: Executable Installer File Permissions Weakness
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • System policy modification
        PID:3864
      • C:\Users\Admin\AppData\Local\Temp\veovvln.exe
        "C:\Users\Admin\AppData\Local\Temp\veovvln.exe" "-C:\Users\Admin\AppData\Local\Temp\umfvedohswfadhmy.exe"
        3⤵
        • Modifies WinLogon for persistence
        • UAC bypass
        • Adds policy Run key to start application
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Hijack Execution Flow: Executable Installer File Permissions Weakness
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System policy modification
        PID:2360
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\users\admin\appdata\local\temp\tmp7f238q66.exe"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:3112
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3932
  • C:\Windows\umfvedohswfadhmy.exe
    umfvedohswfadhmy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4640
  • C:\Windows\buofppbvhmwswbhuo.exe
    buofppbvhmwswbhuo.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:860
  • C:\Windows\iebvilaxmuhgnveurkgd.exe
    iebvilaxmuhgnveurkgd.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4228
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\iebvilaxmuhgnveurkgd.exe*."
      2⤵
      • Executes dropped EXE
      PID:1940
  • C:\Users\Admin\AppData\Local\Temp\xusnbfvtjsggoxhywqnlg.exe
    C:\Users\Admin\AppData\Local\Temp\xusnbfvtjsggoxhywqnlg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4300
  • C:\Windows\vqmfrthdrykiovdsogb.exe
    vqmfrthdrykiovdsogb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2312
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\vqmfrthdrykiovdsogb.exe*."
      2⤵
      • Executes dropped EXE
      PID:3160
  • C:\Users\Admin\AppData\Local\Temp\vqmfrthdrykiovdsogb.exe
    C:\Users\Admin\AppData\Local\Temp\vqmfrthdrykiovdsogb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3440
  • C:\Windows\vqmfrthdrykiovdsogb.exe
    vqmfrthdrykiovdsogb.exe
    1⤵
    • Executes dropped EXE
    PID:3712
  • C:\Windows\kezrcdqlyepmrxesne.exe
    kezrcdqlyepmrxesne.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3436
  • C:\Windows\kezrcdqlyepmrxesne.exe
    kezrcdqlyepmrxesne.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3116
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\kezrcdqlyepmrxesne.exe*."
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:4028
  • C:\Users\Admin\AppData\Local\Temp\kezrcdqlyepmrxesne.exe
    C:\Users\Admin\AppData\Local\Temp\kezrcdqlyepmrxesne.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4372
  • C:\Users\Admin\AppData\Local\Temp\umfvedohswfadhmy.exe
    C:\Users\Admin\AppData\Local\Temp\umfvedohswfadhmy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4824
  • C:\Windows\xusnbfvtjsggoxhywqnlg.exe
    xusnbfvtjsggoxhywqnlg.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4788
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\xusnbfvtjsggoxhywqnlg.exe*."
      2⤵
      • Executes dropped EXE
      PID:3060
  • C:\Windows\umfvedohswfadhmy.exe
    umfvedohswfadhmy.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4600
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\umfvedohswfadhmy.exe*."
      2⤵
      • Executes dropped EXE
      PID:4784
  • C:\Users\Admin\AppData\Local\Temp\iebvilaxmuhgnveurkgd.exe
    C:\Users\Admin\AppData\Local\Temp\iebvilaxmuhgnveurkgd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4960
  • C:\Windows\xusnbfvtjsggoxhywqnlg.exe
    xusnbfvtjsggoxhywqnlg.exe
    1⤵
    • Executes dropped EXE
    PID:2980
  • C:\Windows\buofppbvhmwswbhuo.exe
    buofppbvhmwswbhuo.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4556
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\buofppbvhmwswbhuo.exe*."
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:3228
  • C:\Windows\iebvilaxmuhgnveurkgd.exe
    iebvilaxmuhgnveurkgd.exe
    1⤵
    • Executes dropped EXE
    PID:1504
  • C:\Users\Admin\AppData\Local\Temp\buofppbvhmwswbhuo.exe
    C:\Users\Admin\AppData\Local\Temp\buofppbvhmwswbhuo.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:928

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Execution

        Persistence

        Boot or Logon Autostart Execution

        3
        T1547

        Registry Run Keys / Startup Folder

        2
        T1547.001

        Winlogon Helper DLL

        1
        T1547.004

        Hijack Execution Flow

        1
        T1574

        Executable Installer File Permissions Weakness

        1
        T1574.005

        Privilege Escalation

        Abuse Elevation Control Mechanism

        1
        T1548

        Bypass User Account Control

        1
        T1548.002

        Boot or Logon Autostart Execution

        3
        T1547

        Registry Run Keys / Startup Folder

        2
        T1547.001

        Winlogon Helper DLL

        1
        T1547.004

        Hijack Execution Flow

        1
        T1574

        Executable Installer File Permissions Weakness

        1
        T1574.005

        Defense Evasion

        Abuse Elevation Control Mechanism

        1
        T1548

        Bypass User Account Control

        1
        T1548.002

        Hijack Execution Flow

        1
        T1574

        Executable Installer File Permissions Weakness

        1
        T1574.005

        Impair Defenses

        2
        T1562

        Disable or Modify Tools

        1
        T1562.001

        Safe Mode Boot

        1
        T1562.009

        Modify Registry

        5
        T1112

        Credential Access

        Discovery

        System Information Discovery

        2
        T1082

        System Location Discovery

        1
        T1614

        System Language Discovery

        1
        T1614.001

        Lateral Movement

        Collection

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

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        Downloads

        zacbtbvxrewamznikijlk.keg
        • Path C:\Program Files (x86)\zacbtbvxrewamznikijlk.keg
        • Size 280B
        • SHA256 cec1684fc7c9a650e8dc153f744c4673170cbd7534dadc76f84fcf4452a229be
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        dhxvuubpnrh.exe
        • Path C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
        • Size 320KB
        • SHA256 2bb31dcbd506f52715f60406f5eb7e2a0705ac8d5181d26d997a490e14f6332f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        veovvln.exe
        • Path C:\Users\Admin\AppData\Local\Temp\veovvln.exe
        • Size 712KB
        • SHA256 b36048fceb76d2076cc8e56b52c3e02e02fec8d8f22f89aa1321a0606da16d65
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ugtdgzerwuxmjhgmziuhrunsfkilaxvu.nwi
        • Path C:\Users\Admin\AppData\Local\ugtdgzerwuxmjhgmziuhrunsfkilaxvu.nwi
        • Size 4KB
        • SHA256 8f86978218d5281a070a279476dfc385ee4f0411655266f85aab06a070217c9b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        zacbtbvxrewamznikijlk.keg
        • Path C:\Users\Admin\AppData\Local\zacbtbvxrewamznikijlk.keg
        • Size 280B
        • SHA256 8ad2c67c877078434f081492db18bb51236cf9e94aca343a01eb1731df1326ac
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zacbtbvxrewamznikijlk.keg
        • Path C:\Users\Admin\AppData\Local\zacbtbvxrewamznikijlk.keg
        • Size 280B
        • SHA256 e2b1bcff322ebbcb23e99c69d3146b34d0b6e70342257229153026521b4b01fb
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        kezrcdqlyepmrxesne.exe
        • Path C:\Windows\SysWOW64\kezrcdqlyepmrxesne.exe
        • Size 524KB
        • SHA256 c4c741a11beb96f4c28deda40b4b246a350a83e0bd91ab6e09e5b59fcba51a39
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download